A Donald Trump-backed candidate for governor in Oklahoma survived a close call in a runoff race that turned nasty.
Mike Mazzei, a former state senator and former Oklahoma budget secretary, emerged with the Republican nomination Tuesday night over Gentner Drummond, the state's attorney general in the runoff race.
Bitter personal attacks, millions of dollars in spending and a furious dispute over the candidates' health and drug-testing records were the hallmarks of this Midwest campaign.
It was a victory by the narrowest of margins, with Mazzei edging out Drummond by less than a single point.
The victory represents another high-profile test of Trump's ability to shape Republican primary contests, particularly in a governor's race where his endorsement record has historically been less formidable than in Senate and House races.
The president endorsed Mazzei ahead of the June primary and repeatedly returned to the race in the weeks before the runoff, attacking Drummond and urging Oklahoma Republicans to back his preferred candidate.
What began as a conventional Republican primary quickly descended into one of the nastier campaigns of the election cycle.
The candidates clashed over their records, their relationship with Trump and, in the final weeks, their health.
Following a debate discussion regarding candidate health and stamina, Drummond voluntarily released his health records and a negative drug test, then challenged Mazzei to do the same.
President Trump endorsed Mike Mazzei ahead of the June primary and repeatedly returned to the race in the weeks before the runoff, attacking Gentner Drummond and urging Oklahoma Republicans to back his preferred candidate
Mazzei ultimately outspent Drummond overall, with approximately $12.3 million spent across the primary and runoff compared with Drummond's $9.1 million
Drummond argued that Mazzei’s drug test was not sufficient because it could not detect substances over a longer period. The dispute gained added significance following Mazzei’s serious 2008 car accident, though Mazzei has denied currently relying on pain medication
Drummond released financial and health records as he sought to demonstrate his fitness for office. He also released the results of a drug test, saying the test showed he was not taking any notable medications.
Mazzei responded with a clean drug test of his own.
But Drummond argued that Mazzei's test did not go far enough because it did not use a testing method capable of detecting substances over a longer period.
The dispute carried added significance because Mazzei survived a serious car accident in 2008 and was prescribed pain medication afterward.
Mazzei has denied that he currently relies on pain medication and said he stopped taking it in early 2009.
The health controversy became an extraordinary feature of a governor's race that had already been saturated with television advertising and personal attacks.
The race was also a spectacular money battle.
Mazzei largely financed his own campaign, loaning it an Oklahoma-record $11.6 million.
Drummond put $3 million of his own money into his campaign while attracting substantially more from donors.
Mazzei ultimately outspent Drummond overall, with approximately $12.3 million spent across the primary and runoff compared with Drummond's $9.1 million.
Outside groups piled on as well.
Nearly $13 million was spent by outside organizations on the gubernatorial runoff since July 1.
The Club for Growth affiliate School Freedom Fund spent more than $3 million attacking Drummond, accusing the attorney general of refusing to defend Trump against impeachment.
An opposing super PAC, Put Oklahoma 1st, spent close to $3 million targeting Mazzei and accusing him of previously supporting tax increases.
The result was a campaign in which the candidates were barely able to breathe between waves of television advertisements, accusations and counterattacks.
